The NTSB also noted that when the FAA approved PenAir to fly in and out of the Unalaska airport with the Saab 2000, “they did not recognize that the safety area beyond the end of the runway did not conform to the recommended safety criteria for an airplane in that design category.”A 2007 report published by ICAO noted that except under special conditions, the Runway Safety Area standard dimensions for runways used by aircraft with approach speeds of 121 knots or more are 500 feet wide and 1,000 feet long.